expect-react-shallow

import React from 'react';
import { expect } from 'mocha';
import expectReactShallow from 'expect-react-shallow';
 
class TestComponent extends React.Component {
    render() {
        return <div className="foo">Hello React!</div>;
    }
}
 
describe('TestComponent', () => {
 
 	it('works', () => {
 
 		// OK
        expectReactShallow(<TestComponent/>)
            .to.have.rendered(<div>Hello React!</div>);
 
        // OK
        expectReactShallow(<TestComponent/>)
            .to.have.exactly.rendered(<div className="foo">Hello React!</div>);
 
        // Error
        expectReactShallow(<TestComponent/>)
            .to.have.exactly.rendered(<div/>);
 
        // OK
        expectReactShallow(<TestComponent/>)
            .to.contain(<div/>);
 
    });
 
});

expectReactShallow(ReactComponent|JSX).to.have.rendered(ReactComponent|JSX);
expectReactShallow(ReactComponent|JSX).to.have.rendered.with.all.children(ReactComponent|JSX);
expectReactShallow(ReactComponent|JSX).to.have.exactly.rendered(ReactComponent|JSX);
expectReactShallow(ReactComponent|JSX).to.contain(ReactComponent|JSX);
expectReactShallow(ReactComponent|JSX).to.contain.exactly(ReactComponent|JSX);
expectReactShallow(ReactComponent|JSX).to.contain.with.all.children(ReactComponent|JSX);
expectReactShallow(ReactComponent|JSX).to.not.contain(ReactComponent|JSX);
expectReactShallow(ReactComponent|JSX).to.not.contain.exactly(ReactComponent|JSX);
expectReactShallow(ReactComponent|JSX).to.not.contain.with.all.children(ReactComponent|JSX);